How does acute exercise effect stroke volume?

Acute exercise increases stroke volume, which is the amount of blood ejected by the heart with each beat. This increase occurs due to enhanced venous return, improved myocardial contractility, and increased sympathetic nervous system activity, leading to a more efficient heart. As exercise intensity rises, the heart pumps more blood to meet the heightened oxygen demands of the working muscles. This physiological response helps maintain adequate circulation and supports overall cardiovascular function during physical activity.